Area Code +31-172-(840000...849999) located in Alphen aan den Rijn, Zuid-Holland (ZH), more detail is as below. Place International Dialing Code : 31 International Prefix : 00 National Prefix : 0 National Destination Code : 172 Subscriber Number From : 840000 Subscriber Number To : 849999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 9 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : UPC Nederland B.V. Click here to buy Netherlands Area Code Database Other Information Language Code : nl (Dutch) Country Number : 528 (Netherlands) Country Code : NL (Netherlands) Region Code : ZH Region Name : Zuid-Holland City : Alphen aan den Rijn Timezone : Europe/Amsterdam Coordinated Universal Time : +01:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 9 Latitude : 52.1300 Longitude : 4.6600 ‹ previous : +31-172-(830000...830999) next › : +31-172-(850000...850999) Dialling Instructions For trunk calls: 0 172 840000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 31 172 840000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 840000 ~ 849999 (Count: 10,000) Example: +31-172-840000 / 0031-172-840000 (0172-840000 / 0-172-840000) +31-172-840001 / 0031-172-840001 (0172-840001 / 0-172-840001) +31-172-840002 / 0031-172-840002 (0172-840002 / 0-172-840002) +31-172-840003 / 0031-172-840003 (0172-840003 / 0-172-840003) +31-172-840004 / 0031-172-840004 (0172-840004 / 0-172-840004) ...+31-172-xxxxxx / 0031-172-xxxxxx (0172-xxxxxx / 0-172-xxxxxx) ...+31-172-849995 / 0031-172-849995 (0172-849995 / 0-172-849995) +31-172-849996 / 0031-172-849996 (0172-849996 / 0-172-849996) +31-172-849997 / 0031-172-849997 (0172-849997 / 0-172-849997) +31-172-849998 / 0031-172-849998 (0172-849998 / 0-172-849998) +31-172-849999 / 0031-172-849999 (0172-849999 / 0-172-849999)